These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] dev-scheme/mit-scheme-12.1-r1::gentoo  USE="gdbm -blowfish -gui -postgres" 86468 KiB

Total: 1 package (1 new), Size of downloads: 86468 KiB